2006 GT BOSE with Factory navigation with aftermarket AMP Problem!!! - Mazda3 Forums : The #1 Mazda 3 Forum
 
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post #1 of 9 (permalink) Old 05-10-2017, 01:29 AM Thread Starter
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2006 GT BOSE with Factory navigation with aftermarket AMP Problem!!!

Hi eveybody, after owning my car for more than 11 years it's finally a time to rip out the stock bose system and do some upgrade to the whole audio system.

I made a custom harness that plug and play with the factory bose amp removed and I can enjoy aftermarket amp and speakers but planning to keep the Stock headunit. Here is where I ran into some problem. After dumping the stock bose amp than plug in with the excelon 4 channels,I was able to get sound from source CD, FM and AM to all speakers except the FRONT LEFT channel. I knew the connections that I made in the harness is correct, I checked million times because I do get VOICES from my NAVIGATION to the FRONT LEFT channel but just not the source from the HEADUNIT.
But as soon as I plug the BOSE amp back everything works as it should be, I am really out of ideas.

I am really so sure it has to do with the stock navigation cutting out music source to the FRONT LEFT

Any expert could help me out here?

Thanks in advance.
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post #2 of 9 (permalink) Old 05-12-2017, 03:14 PM
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That is certainly strange. It's difficult to sort of pin-point where an issue could be here since I'm unsure myself how the navi unit injects the voice guidance into the audio stream, and I doubt many people would know this considering the limited number of navi option vehicles that I'm sure even existed. If I had to guess the root cause of the error you're having it's either in how the voice guidance injection is being done, or maybe you have a bad connection in the harness you built and the aftermarket amp is doing some weird trickery with the audio. Try plugging in the OEM bose amp again and playing with the balance/fade. If all still sounds good, try then setting the audio output to only the front left and do some voltage probing on the stock harness to make sure the audio is in fact coming through on that front left channel (into the BOSE amp). If for some reason it isn't, and BOSE amp is actually doing some weird play with the audio to make that front left channel output possible, then to be frank I don't really know how you're going to get around that. If audio is still being sent from the HU to the BOSE amp on the front left channel, then you likely have some issue with your harness.

I kind'a think it wouldn't be that complicated, but really I'm not sure.
BTW that harness looks good! Nice work!


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post #3 of 9 (permalink) Old 05-12-2017, 10:19 PM
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Do you still have automatic volume control after swapping the speakers?

I do this from my phone. Do the BSD. slight vibration increase. Zoom-zoom 😎
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post #4 of 9 (permalink) Old 05-13-2017, 11:30 AM
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That's weird for sure. I use a Bose HU from a 2008, and it functions perfectly. I did use an AOEM-MAZ2 Pac interface though instead of making my own.
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post #5 of 9 (permalink) Old 05-13-2017, 11:56 AM Thread Starter
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Swapping speakers does not alter the automatic volume control.

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post #6 of 9 (permalink) Old 05-13-2017, 11:58 AM Thread Starter
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Quote:
Originally Posted by theblooms View Post
That's weird for sure. I use a Bose HU from a 2008, and it functions perfectly. I did use an AOEM-MAZ2 Pac interface though instead of making my own.
Yes, in you case should be perfect. Do you have the factory navigation?

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post #7 of 9 (permalink) Old 05-14-2017, 02:50 PM
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No, no factory nav.
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post #8 of 9 (permalink) Old 05-17-2017, 12:47 AM Thread Starter
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Quote:
Originally Posted by 360Spider View Post
That is certainly strange. It's difficult to sort of pin-point where an issue could be here since I'm unsure myself how the navi unit injects the voice guidance into the audio stream, and I doubt many people would know this considering the limited number of navi option vehicles that I'm sure even existed. If I had to guess the root cause of the error you're having it's either in how the voice guidance injection is being done, or maybe you have a bad connection in the harness you built and the aftermarket amp is doing some weird trickery with the audio. Try plugging in the OEM bose amp again and playing with the balance/fade. If all still sounds good, try then setting the audio output to only the front left and do some voltage probing on the stock harness to make sure the audio is in fact coming through on that front left channel (into the BOSE amp). If for some reason it isn't, and BOSE amp is actually doing some weird play with the audio to make that front left channel output possible, then to be frank I don't really know how you're going to get around that. If audio is still being sent from the HU to the BOSE amp on the front left channel, then you likely have some issue with your harness.

I kind'a think it wouldn't be that complicated, but really I'm not sure.
BTW that harness looks good! Nice work!
I was able to tried my harness with the excelon amp on another car with bose without factory navigation and it WORK 100% all fader left and right without any trouble.....

So I plug in back on my car and still no sound but only voice guidance from the stock navigation to the left front speaker, other speakers do work. Also it dosent matter how I adjust the fader left and right, back and front it does not change the guidance volume for the front left speaker.

I really dont know why??? the factory harness to the bose amp only have 17 wires, 8 for inputs, 8 for outputs and remote turn on which is exactly same as mine.

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post #9 of 9 (permalink) Old 05-20-2017, 08:30 PM
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Oh wow, I wish I knew where to go from here, but having never messed with the factory nav, I'm at a total loss. Maybe try to call Crutchfield? They may have a speciality harness.
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